This is exactly the same issue as the R3 target switch issue (which is also very still alive: http://forums.ubi.com/showthread.php...g-a-controller) now with L3 when lock cancel due to pressing running is enabled. The problem lies within that the game registers already slight pressing of those buttons. Normally (in other titles) you would have to press L3 or R3 down until you would hear a solid clicking.
https://youtu.be/0xLjrZTBFuw
What you can see in the video is unintended unlocking during the GB und also the rolling in the first example clip right after the guard break. All due to changing just directions (throwing und movement)
This can of course be avoided by turning off the new lock cancel option for controller users but well.. sth should be done about the fundamentals in my opinion especially since also the R3 target switch hasn't been solved by now,